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proj4  

A simple interface to the PROJ.4 cartographic projections library
View on CRAN: Click here


Download and install proj4 package within the R console
Install from CRAN:
install.packages("proj4")

Install from Github:
library("remotes")
install_github("cran/proj4")

Install by package version:
library("remotes")
install_version("proj4", "1.0-15")



Attach the package and use:
library("proj4")
Maintained by
Simon Urbanek
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2007-06-07
Latest Update: 2025-03-21
Description:
A simple interface to lat/long projection and datum transformation of the PROJ.4 cartographic projections library. It allows transformation of geographic coordinates from one projection and/or datum to another.
How to cite:
Simon Urbanek (2007). proj4: A simple interface to the PROJ.4 cartographic projections library. R package version 1.0-15, https://cran.r-project.org/web/packages/proj4. Accessed 18 Sep. 2026.
Previous versions and publish date:
(2026-07-09 06:43), 1.0-3 (2007-06-07 21:18), 1.0-4 (2007-06-10 21:50), 1.0-5 (2011-01-17 09:12), 1.0-6 (2011-02-01 08:48), 1.0-7 (2011-12-11 11:41), 1.0-8.1 (2019-09-07 19:32), 1.0-8 (2012-08-05 08:07), 1.0-10.1 (2021-01-26 11:10), 1.0-10 (2020-03-02 21:40), 1.0-11 (2022-01-31 14:39), 1.0-12 (2022-11-30 10:31), 1.0-13 (2023-08-17 08:11), 1.0-14 (2024-01-14 16:20)
Other packages that cited proj4 R package
View proj4 citation profile
Other R packages that proj4 depends, imports, suggests or enhances
Complete documentation for proj4
Functions, R codes and Examples using the proj4 R package
Some associated functions: project . transform . 
Some associated R codes: 0pkgname.R . project.R . tools.R . transform.R .  Full proj4 package functions and examples
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